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W. F. MASON.

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APPLICATION man JUNE 17, 1920.

1,407,039, Patented Feb. 21, 1922.

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` may be folded UNHED STATES WILLIAM F. MASON, OF LOS ANGELES, CALIFORNIA.

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Specification of Letters Patent. Patented Feb.v 21,

Application filed June 17, 1920. Serial No. 389,720. Y.

To all w .7mm it may concern.'

Be it known that I, VVILLIAMF. MASON, a citizen of the United States, residing at Los Angeles. in the county yof Los Angeles and State of California, have invented new and useful Improvements in Tables, of whichthe following is a specification.v

My invention is a tableand my main object is to provide a table including a detachable rotatable shelf, the parts of which compactly when the shelf is removed. y j

'ther objects will appear hereinafter.

My invention consists in the features of construction, combination of element-s and arrangement ofparts which will be hereinafter described and pointed out in the claims.

My invention is illustrated in vthe annexed drawing forming 'al part of this specification,

- in which the legs thereof being broken away.

, Figure 2 is a cross section of the detachable' rotatable shelf vtaken on line 2-*2 of Figure g j Y Figure 3 isv a bot-tom plan ofthe shelf with the pivot and wheelsfolded thereupon.

Figure /lis anenlarged elevationofthe shelf pivot and vertical section of the pivot bearingin the'table top. a

Figure 5y is an enlarged sideelevation of the upper portion of the shelf pivot.

Figure 6 is an enlargedelevation'of one of the' shelf wheel supports.

Figure? is an enlarged side elevation of said wheel supports.

The part indicated 1 is the top of the table which is supported on legs 2. In the center of the top of the table is an opening 3 in which is litted a pivot bearing l formed with an upper external flange 5 which is countersunk' in the table top and secured thereto by screws 6.

A rotatable shelf 'Z' which may be circular in shape is det-achably mounted upon the table top 1 as will be more particularly described.. A shelf pivot 8 includes a T- shaped bracket 9, a bar 1() provided with a longitudinal slot 11, a bar 12 provided with a longitudinal slot 13 and a journal 14. The horizontal arms of the bracket 9 are secured by screws 15 to the under side of the shelf with the vertical member of said bracket depending centrally from the under side of the shelf. The bar 10 is hinged to the lower Figure 1 is a side elevation of mytable,

end of thei depending member of bracket 9 by hinge 16. A screw 17 projectsthrough the slots 1 1v and 18 in the". bars 10and a buttery nut 418 yscrews on the'en'd of said 60 screw. The journal'ld: is secured on the lower .end'of the bar 12 and is adapted to fit and turn in bearing kdigan external flange 19 being' formed on the upper end of thejournal for engaging the top 'of the` bear- 65 inge. Aglock'QO is pivoted to .the depending member ofthe bracket 9 on'the sideI of said member opposite'the hinge 16, by a pivot 12.'` said lock being provided kwith a slot 22 extending from one edge concentric 7 0 to said pivot to receive a pin 23 Von the upper end of bar 10 to lock said bar andb'ar 12 in a vertical position. v .Y i' y A plurality of wheels 25, preferablylthree innumber spaced equal distancesy apart are mounted respectively onfa"corresponding number of supports 26v secured to fthejund'er side of the shelf 7 near the periphery .thereof, said wheels, resting upon the table top 1 and supporting the shelf soy 'that it maybe 80 rotated on the pivot 14 with relation 'to vsaid top. Eachsupport 26 includes a T-shaped bracket2j7 and a bar 28. The`- horizontal member off theV brackets 27 is secured by screws 29 to the under Sideoftheshelf 7 85V and the upper end of the ba'r 28 of each support 26 is `Vhinged to the lower endof the Y depending member ofsaid brackets by a hinge `80. Each bar.28 yhas a longitudinal slot 31 throughwhich extendsfanaxle 32 90 z on which a wheel25'is'jouinaled. Each axle has a shoulder 33 which rests against the forward side of a bar 28 and against which rests the rear end of the hub of a wheel k25. The rear end of each axle is threaded and a butt-er y nut 34 screws thereon against the rear side of a bar 28. The forwardl end of each axle 32 is threaded and a nut 35 screws thereon against the forward end of the hub of a wheel 25 to det-aohably hold the wheel 100 on the axle.V A lock 40 is pivoted to the depending vertical member of each bracket 27 on the side of said member opposite the hinge 30 by a pivot 41, said lock being provided with a slot 42 extending from one 105 edge `concentric to said pivot to receive a pin 43 extending from the upper end of a bar 28 to lock said bar in a vertical position with the wheel mounted thereon resting upon the table top 1.

In order to rotatably mount the shelf 7 upon the table top 1 the bars 10 and 12 are swung into a vertical position and locked by the lock 20; the bars 28 are swung into a vertical position and locked by the locks 40; and the shelf 7 is placed over the table top 1 and the journal 14 fitted in the bearing 17 with the wheels 25 resting upon the table top 1. The shelf 7 may then be ro'- tated very easily by hand so that articles on the shelf 7 may be brought within convenient reach of any one at any point of the table, the journal 14 turning in the bearing 4 and the wheels 25 rolling on the table top 1. `The shelf may be removed from the table top 1 simply by lifting it off thereof, the journal 14 slipping very readily out of the bearing 4. The pivot '8 and the wheels 25 may be folded upon the under side of the shelf 7 on the hinges 16 and 30 respectively upon disengaging the lock 2() from the pin 23 and the locks 40 from the pins 43. The height of the pivot 8 and the distance of the wheels 25 below the shelf 7 may be adjusted by means of the butterfly nuts 18 and 34 respectively to vary the height of the shelf 7 with relation to the table top 1. The individual adjustment of each wheel 25 by means of the butterfly nuts 34 enables the wheels 25 to be adjusted so thatall wheels engagethe table top 1 and support the shelf 7 firmly against rocking or tilting.

I claim:` i

1. In a table, a bearing a rotatable shelf, a bracket secured to the under side of said shelf, a swinging pivot member hinged to said bracket, a journal on the lower end of said pivot member adapted to fit vdetachably in said bearing, a lock pivoted to said bracket provided with a slot, and apin on the upper end of said swinging pivotI memb`er for engaging said slot to hold the pivot swinging member in vertical pivoting position, and means for supporting the shelf in position on the table top.

in the top thereof, v

ceive said pins to lock said bars in support- Y ing position with the wheels resting upon the table top.

3. In a table, a bearing in the top thereof, a rotatable shelf, a pivot including a pair loflongitudinally slotted bars, one of said bars being secured at its upper end to said shelf, a screw extending through the slots of said bars, a butterfly nut screwing onto the end of said screw for adjusting the length ofthe pivot, a journal on the lower end of the other pivot bar adaptedto fit in said bearing, and means for supporting Y said shelf on the table top.V l

4. In a table, a shelf, means for pivoting said shelf upon said table, a plurality of slotted bars secured to said shelf, an axle extending through the slot in each of said bars, a shoulder on each axle for engaging the front face of a bar, a butterfly nut screwing on the rear end of each ofV said axles against the rear face of a bar, and a wheel on each axle adapted to rest on the table top Vto support the rotatable shelf.

5; In a table, a table top, a rotatable shelf, a series offrollers mounted on said shelf adapted to bear on said table top for supporting said shelf and maintaining it in a horizontal position, a pivot on said` shelf detachably engageable with thertable top, and members hinged on said shelf on which said pivot and said rollers are mounted adapted to be disposed to extendy along the underside of theshelf or to project lat substantially right angles thereto.

WILLIAM F. MASON. i 

